<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文件分支树</title>
    <link rel="stylesheet" href="tree.css ">
</head>

<body>
    <div class="shell">
        <details open>
            <summary>Final assignment</summary>
            <div class="folder">
                <p>index.html</p>
                <details>
                    <summary>style</summary>
                    <div>
                        <details>
                            <summary>css</summary>
                        </details>
                        <details>
                            <summary>js</summary>
                            <div class="folder">
                                <p>index.js</p>
                                <p>effect.js</p>
                                <p>all.js</p>
                            </div>
                        </details>
                        <details>
                            <summary>img</summary>
                            <div class="folder">
                                <p>background.png</p>
                                <p>logo.png</p>
                                <img src="images/sprites.png" alt="">
                            </div>
                        </details>


                    </div>

                </details>
            </div>
        </details>
    </div>
</body>

</html>